Fodor's Expert Review Mast Brothers

The elegantly wrapped bars of Brooklyn's artisanal bean-to-bar chocolatiers are ubiquitous in New York City, but to experience the magic as it transpires, head to the Mast flagship on North 3rd Street, where you can tour the factory and sample goodies ($10, register online). The all-natural, single-origin chocolate bars are earthy and barely sweet. Two doors down at Brew Bar, cocoa beans are brewed like coffee—the taste is like nothing you've tried before.